Itelco Industry AQH 20 Manual

AQL/AQH 20-35
Air Cooled Water Chillers and Heat Pump
Refrigeratori d’Acqua e Pompe di Calore Raffreddati ad Aria
Refrigerateurs à Eau et Pompes de Chaleur Refroidies à Air
Luftgekühlte Wasserkühler und Wärmepumpen
Refrigeradores de Agua y Bombas de Calor Refrigerados por Aire
IOM AQ410-N.1 ALL
Part number / Codice / Code / Code / Código : 035B09040-000
Supersedes / Annulla e sostituisce / Annule et remplace / Annulliert und ersezt /
Anula y sustituye: None / Nulla / Néant / Nicht / Ninguno
“Notified Body /Organismo Notificato / Organisme Notifié / Benannte
Zertifizierungsstelle / Organismo Notificado No. 1115 ”
Installation and maintenance manual
Manuel d’installation et de maintenance
Installations- und Wartungshandbuch
Manuale di installazione e di manutenzione
Manual de instalación y de mantenimiento
English Français
20
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35 kW
20
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40 kW
EspañolDeutsch Italiano
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Page 1
Table of contents
English
1 FOREWORD
1.1 Introduction 3
1.2 Warranty 3
1.3 Emergency stop/Normal stop 3
1.4 An introduction to the manual 3
2 SAFETY
2.1 Foreword 4
2.2 Definitions 4
2.3 Access to the unit 5
2.4 General precautions 5
2.5 Precautions against residual risks 5
2.6 Precautions during maintenance
operations 6
2.7 Safety labels 7
2.8 Safety regulations 9
3 TRANSPORTATION, HANDLING
AND STORAGE
3.1 Inspection 12
3.2 Handling 12
3.3 Anchoring 13
3.4 Storage 13
4 INSTALLATION
4.1 Installation Site 14
4.2 External Water Circuit 14
4.3 Water connections 16
4.4 Defrost water drainage
(only for AQH units) 16
4.5 Water buffer tank 16
4.6 Power supply 17
4.7 Electrical Connections 18
5 START-UP
5.1 Preliminary Checks 20
5.2 Start-up 20
5.3 Checking the operation 21
5.4 Delivery to the customer 21
6 AQL/AQH CONTROL
6.1 Electronic Card Control 22
6.2 Dip Switches 23
6.3 ALAr and LOg Menu 26
6.4 SEnS Menu –Sensor reading 27
7 PRODUCT DESCRIPTION
7.1 General Information 28
7.2. Accessories 29
7.3 Refrigerant Circuits 32
8 TECHNICAL DATA
8.1 Hydraulic Features 34
8.2 Electrical Characteristics 37
8.3 Working Range 38
8.4 Dimensional Drawings 40
8.5 Space Requirements 41
9 MAINTENANCE
9.1 General requirements 42
9.2 Planned maintenance 42
9.3 Refrigerant charge 43
9.4 Compressor 43
9.5 Condenser 43
9.6 Fans 43
9.7 Dehydrating filter 43
9.8 Sight glass 43
9.9 Thermostatic expansion valve 44
9.10 Evaporator 44
9.11 Troubleshooting 45
Table of contents

Page 2
Table of contents
10 SPARE PARTS
10.1 Spare part list 47
10.2 Oils for compressors 47
10.3 Wiring diagrams 47
11 DISMANTLING, DEMOLITION
AND SCRAPPING
11.1 Generalities 48

Page 3
Foreword
English
1 FOREWORD
1.1 Introduction
Itelco-Industry units, manufactured to state-of-the-art
design and implementation standards, ensure top
performance, reliability and fitness to any type of air-
conditioning systems.
These units are designed for cooling water or glyco-
led water (and for water heating in heat pump mo-
dels) and are unfit for any purposes other than those
specified in this manual.
This manual includes all the information required for
a proper installation of the units, as well as the rele-
vant operating and maintenance instructions.
It is therefore recommended to read this manual ca-
refully before installation or any operation on the
machine. The chiller installation and maintenance
must be carried out by skilled personnel only (where
possible, by one of Itelco-Industry’s Authorised Servi-
ce Centers).
The manufacturer may not be held liable for any da-
mage to people or property caused by improper
installation, start-up and/or improper use of the unit
and/or failure to implement the procedures and in-
structions included in this manual.
1.2 Warranty
These units are delivered complete, tested and ready
for being operated. Any form of warranty will beco-
me null and void in the event that the appliance is
modified without Itelco-Industry’s preliminary written
authorisation.
This warranty shall apply providing that the instal-
lation instructions have been complied with (either
issued by Itelco-Industry, or deriving from the current
practice), and the Form 1 (“Start-up”) has been fil-
led-in and mailed to Itelco-Industry (attn. After-Sales
Service).
In order for this warranty to be valid, the following
conditions shall be met:
■The machine must be operated only by skilled per-
sonnel from Itelco-Industry’s Authorised After-Sales
Service.
■Maintenance must be performed only by skilled
personnel - from one of Itelco-Industry’s Authorised
After-Sales Centers.
■Use only original Itelco-Industry spare parts.
■Carry out all the planned maintenance provided
for by this manual in a timely and proper way.
Failure to comply with any of these conditions will
automatically void the warranty.
1.3 Emergency stop / Normal stop
The emergency stop of the unit can be enabled using
the master switch on the control panel (move down
the lever).
For a normal stop, press the relevant push-buttons.
To restart the appliance, follow the procedure detai-
led in this manual.
1.4 An introduction to the manual
For safety reasons, it is imperative to follow the in-
structions given in this manual. In case of any dama-
ge caused by non-compliance with these instructions,
the warranty will immediately become null and void.
Conventions used throughout the manual:
The Danger sign recalls your attention to a
certain procedure or practice which, if not
followed, may result in serious damage to
people and property.
The Warning sign precedes those proce-
dures that, if not followed, may result in se-
rious damage to the appliance.
The Notes contain important observations.
The Useful Tips provide valuable informa-
tion that optimises the efficiency of the ap-
pliance.
This manual and its contents, as well as the docu-
mentation which accompanies the unit, are and re-
main the property of Itelco-Industry, which reserves
any and all rights thereon. This manual may not be
copied, in whole or in part, without Itelco-Industry’s
written authorization.